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Título : Synthesis, characterization and photophysical studies of novel pyrene labeled ruthenium (II) trisbipyridine complex cored dendrimers
Autor : Vonlanthen, Mireille
Cevallos Vallejo, Amanda Sofía
Aguilar Ortíz, Edgar
Ruiu, Andrea
Porcu, Pasquale
Rivera, Ernesto
Palabras clave : Ruthenium complex
Pyrene
Dendrimer
Fecha de publicación : 2016
Editorial : Elsevier
Citación : Vonlanthen, M., Cevallos Vallejo, A., Aguilar Ortíz, E., Ruiu, A., Porcu, P., & Rivera, E. (2016). Synthesis, characterization and photophysical studies of novel pyrene labeled ruthenium (II) trisbipyridine complex cored dendrimers. Polymer, 99, 13–20. doi.org/10.1016/j.polymer.2016.06.061
Citación : PRODUCCIÓN CIENTÍFICA-ARTÍCULOS;A-IKIAM-000097
Resumen : Two new bipyridine ligands containing, respectively, two and four pyrene units were prepared. Theobtained compounds were employed to synthesize new pyrene labeled ruthenium (II) trisbipyridinecomplex as well as a pyrene labeled ruthenium (II) trisbipyridine cored dendrimer. The obtainedbipyridine ligands and the ruthenium complexes were characterized by NMR spectroscopy and MALDI-TOF mass spectroscopy. The optical and photophysical properties of the luminescent macromoleculeswere studied by absorption andfluorescence spectroscopy. It was noticed that the absorption spectra ofthe obtained complexes correspond to the sum of the absorption spectra of their components, whichindicates a lack of interaction in the ground state. Efficient energy transfer was observed from pyreneunits to the metal complex core resulting in the observation of the characteristic ruthenium bipyridineemission band upon excitation at the pyrene absorption wavelength. Moreover, efficient protection tooxygen quenching was remarked in thefirst generation dendrimer.
URI : http://repositorio.ikiam.edu.ec/jspui/handle/RD_IKIAM/160
https://doi.org/10.1016/j.polymer.2016.06.061
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